Looking for more TMNT sets? Well, we're all out of luck there. But LEGO's done possibly the next best thing and have created PDF instructions for alternate models for each set. Unfortunately, there is no such file for 79103 Turtle Lair Attack which is a little puzzling. 488 pieces and they couldn't come up with anything? Download the entire zip file (about 15mb) and get re-building!

These are really cool. I like the Shellraiser car, Baxter scorpion, but most of all, I love the little boat! The Steath Buggy thing looks terrible and the Shredder bumper car is eh. I'm going to try to build all of them anyway.